Home / 3,281.40-4,923.68-1,638.18

Finding the Fourth Proportional to 3,281.40, 4,923.68 and 1,638.18

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Solution

The fourth proportional to 3,281.40, 4,923.68 and 1,638.18 is: 2,458.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.40 : 4,923.68 = 1,638.18 : x
  2. Step 2: Convert to fraction form
    3,281.40/4,923.68 = 1,638.18/x
  3. Step 3: Cross multiply
    3,281.40x = 4,923.68 × 1,638.18
  4. Step 4: Simplify right side
    3,281.40x = 8,065,874.10
  5. Step 5: Solve for x
    x = 8,065,874.10/3,281.40
  6. Step 6: Final answer
    x = 2,458.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.